I honestly wouldn't know how to work in this summer without that portable AC of mine... Yes, it costs power. But I only run it when I'm working, only in the office, only to a 25°C target, and it's the most climate friendly option I could find back in 2019 too (R290).
New backplate for the AC to convert it to a dual hose setup, all parts printed over the last few days and now epoxying together. Thankfully did not have to design this myself, someone already did and shared 👍😊 https://www.thingiverse.com/thing:5421906
Just hope it really fits 😅
@foosel Hab bei den heißen Temperaturen auch immer wieder überlegt, mir ein Klimagerät zuzulegen. Kannst du eins empfehlen? :D
@psy Meins ist eine AEG ChillFlex Pro Silence. Bin damit zufrieden. Kaufkriterium damals war R290 weil nicht so eine ganz so große Umweltsauerei, und einigermaßen erträgliche Geräuschentwicklung (muss ja dabei arbeiten) bei trotzdem guter Kühlleistung.
Wenn ich hier platztechnisch eine bessere Abdichtung nach außen hinbekäme, wäre das Teil glaub ich auch noch geiler. Aber bin da leider durch Layout und Mietersituation etwas limitiert.
@foosel Letzteres ist bei mir leider ähnlich, sonst würde ich mir einfach ein Split-Gerät installieren. Jetzt weiß ich immerhin, dass ich nach R290 schauen will! Und die AEG schau ich mir auch mal an, danke!
@psy Ich hab hier etwas verwinkelt eingebaute Fenster (Niedrigenergiehaus, recht dicke Wände, gekipptes Fenster lässt keine Anschlussmöglichkeit für Schläuche). Daher Balkontür, Brett mit Schlauchanschluss, Rollladen drauf absenken, Balkontür so weit zu wie geht und alles mit einem schweren Vorhang soweit möglich abdichten, Sonnenschirm davor (Südseite ohne Schatten, wenn schon dann richtig). Ist alles andere als ideal, aber es geht hier einfach nicht anders. Schafft immerhin 7-8°C Differenz.
@foosel Oh that's cool! A Graphana dashboard of temperatures around your house?!
How are you collecting the data? Do you have any device recommendations?
@tim I really need to write a blog post about my home automation setup 😅
I have a Home Assistance instance running that interfaces with some self built sensor hardware (ESP8266 + BME680, powered by ESP Home) as well as off the shelf stuff (mostly Zigbee based Aqara multi sensors via Zigbee2MQTT). HA then pushes various data into an InfluxDB from which I then graph it via Grafana. Below is a screenshot of the whole environment dashboard.
@foosel That is incredibly cool! Maybe one day I'll attempt to build something like this!
@ceha @tim I monitor it individually with power monitoring capable smart plugs flashed with Tasmota. I sadly have no easy to monitor overall consumption (renter with ancient meter in the public basement), so I'm slowly building up device specific monitoring instead.
Data flows into Home Assistant via MQTT, from there into InfluxDB and then gets visualised in Grafana.
@tim @foosel Data from https://www.amazon.com/Aqara-WSDCGQ11LM-Temperature-Humidity-Sensor/dp/B07D37FKGY and some official weather station that is available from the web.
@tim @foosel Data from the electricity and gas counter, using the Dutch P1 interface and https://www.zuidwijk.com/product/p1-reader-ethernet/
@foosel Eigentlich ziemlich schlau und kam bisher in meinen Gedanken nicht vor: Man kann ja den Rolladen mitverwenden.
Der hat ein viel angenehmer quadratisches Format als eine angelehnt Tür. 🙂
@lakoja Jup, und das funktioniert hervorragend! Ich hab vor dem Rolladen dann auch noch immer einen Sonnenschirm stehen, und mache innen die Tür soweit zu wie möglich und dichte den Bereich mit dem Vorhang ab. Laut Wärmebildkamera funktioniert dieser Ansatz wirklich gut.
@foosel Stupid question maybe, but why two ducts? Isn't it "just" heat exhaust? Wouldn't one duct be enough for it?
Pardon me please, I don't know much about A/Cs except they are basically heat-exchangers 🙂
@blindcoder Not a stupid question at all! This article sums it up better than I ever could: https://www.woolie.co.uk/article/convert-ac-from-single-hose-to-dual-hose/
But to give a quick tldr, single hose units use inside air for the heat exchange and then pump it outside. That creates a pressure differential in the room that causes hot air from outside of it to be sucked into it. Dual hose setups separate the outside air loop from the inside air loop, which increases efficiency by a lot.
@foosel @blindcoder I wonder why most ACs are still produced without this option. It's not only stupid. Sometimes it's also dangergous and forbidden (for example in cases you are using gas heaters) because of lowering the pressure in the apartment making it possible to suck back exhaust gases.
@foosel @blindcoder did this kind of mod 2 years ago (with plywood and duct tape on the AC, hoses up converted to 150mm, 2 airduct silencers and a 50W support ductfan, including a full size "window replacement" from polyresin fibre)
still working great.
against the hot outlet and 35 degrees inlet, stone fibre/whool with aluminum coating helps a lot better than any household fabrics.
@foosel Wow, that's some new information to keep in mind, thank you!
Seems my unit can not be converted non-destructively as the entire backplate (including the control panel) is a single piece. Next time I buy one I'll definately check if it's convertible, or comes with two hoses from the start!
@hackbyte You know, that just have me an idea ^^ I just averted a clog of doom earlier tonight, and have some stuff in the queue that beds to be done first, but then I might just look into a custom two sided adapter for the window port, given that I have a couple meters of spare hose
@foosel My only concern with printing the vents would be the heat on the outlet vent - what filament did you use for them?
@peter Extrudr Biofusion, claimed to be mechanically stable up until 75°C. I share the concern, this is a test. If it doesn't work, next attempt will be ASA, though I haven't tried printing with that stuff yet.
@foosel That looks so much better than my improvised solution with a styrofoam box strapped to the unit!
@foosel Hi, kannst das Klimagerät auch heizen (und wie)?
Really happy about an efficiency improvement today! Took the Flir One & scanned my setup for heat creep. Turns out the outlet is fairly well isolated, but the hose turned out to be leaking some air & also radiating heat. Duct tape + blanket ftw! Achieving 10+°C difference now!